[dwild]

> The videos are more about funny jokes than the different phases of matter.

I learn so much better when I'm interested in what I learn, making it funny can be a good way to learn it.

> I don't want to have to sit next to them all night making sure that they are only doing 'productive' work.

Can you explain that one a bit more? Do you expect your kid to always do productive work? Is being productive is all you think matters in life?